Excavating and hoisting apparatus.



J. JOHNSON. EXCAVATING AND HOISTING APPARATUS.

APPLICATION. FILED AUG.22.19I8.

v l INVENTOR Z ATTORNEY .ro Jamison, or

nxoava'rmc Am) HOISTING APP 1:

To all whom z't mag concern." I Be it known that I, JOHN JOHNSON, a c1t1- zen' of the United States, residing at Tukwila, in the county of-King and State of Washington, have invented certain new and useful Improvements in Excavating and HoistingApparatus, of which the following is a, specification.

This invention relates to excavating apparatus, and its object is to provide devices whereby the operations of digging, conve and dum material ma be rapidg fnd eflicientl y p erformed. y

The invention consists in the novel construction, adaptation and combination of parts, as will be hereinafter described and claimed.

- In the accompanying drawings, Figure 1 is aside elevation of a dirt scraper embody ing my, invention. Fig. 2 is a plan view of the same. Fig. 3 ,is a view similar to Fig. 1 with the scraper pan in dumping position. Fig. 4 is a detail sectional view through 41 of Fig. 2. Fi 5 and 6 are diagrammatic views illustrating the scraper in digging and hoisting positions.

e scraper comprises a panP having sides 10 and 10 extending upwardly from a curved or angular shaped bottomll. Said bottom is made somewhat longer than said sides to afi'ord prot-ruding bottom portions 11 and 11 at'the front and rear ends.

- Extending forwardly ofthe cutting edge tilting of the pan in dumping.

11 of the pan are teeth-'12 which. by preference, are formed integral with longitudinal wearing strips 12 secured to the underside of'the bottom 11. Secured to the pan sides are sockets 13 for handles 14 by which the operator controls the scraper when being dragged forwardly in excavating.

15 represents a bail having its legs 15* pivotally connected by bolts, such as 16. to the pan sides adjacent to the bottom and at about the midlength of the same. Said bail is provided with a transverse bar element 15 disposed to be encountered by one of the protruding ends 11 or 11 to limit the 17 represents an eye-bolt swiveled in the bail 15 and to which the operating or ower cable .28 (Figs. 3, 5 and 6) is attache 18 is a frame of a substantially triangular e havinga central bar element 18 exsha ten 'n through guides 19 "secured to the pan si e 10 to afiord reciprocatory moveruxwrm, WASHINGTON, ASSIGNOR or ONE-HALF T0 THEODORE cAnLson, or STILLWA'IER, WASHINGTON.

Specification of Letters Patent. Patented Apr, 15, 1919, 3 Application filed August 22,1918. Serial no. 250,949. I

a space 22 between their adjacent ends.

23 represents a block secured to the bailleg 15 which is adjacent to the pan side 10 and located to project into the space between the latches when the latter are in their lowermost positions. The latches 'are elevated from engageable positions with re spect to .the bail block 23 by raising the frame 18 through the agency of the forwardly directed arm 24 of a lever which is fulcrumed at 25. and is actuated by means of a pull rope 26 connected to the rear arm 24 of said lever.

As shown in Figs. 5 and 6. a boom 27 supports a pulley 29 over which passes the power cable 28 to any suitable winding mechanism, not shown.

The operation of my invention is as follows:

The pan is loaded by being drawn forward by means of the power cable 28 as represented in Fig. 5. the bail then being out of engagement with the latches 21. In such forward travel an attendant on the ground controls by means of handlesl l the action of the pan to suitably'excavate material and cause the same to be dellvered into the pan. When the pan isbrought under the pulley .29 or is tilted up so that a pull the latches thereon to be raised from their positions in which they serve to engage the bail block 23. When this" is accomplished,

. the pan will tilt into the position in which it is shown in Fig. 3 to deposit the load.

From the foregoing it will be seen that the pan may be used for excavating and hoisting purposes through the instrumentality of a s 1e ower cable, and that the pan pan, is suitably adjusted.

may be rea ily dumped while in an elevated position by means of a pull rope which regulates thelatches, which latter acts automatically' to reengage the bail ,when the Under ordinary conditions the load will be disposed in the pan so that it has a tendency to tip forward; but the attendantby exerting a continued pull on the rope '26 may cause the pan to tip toward the rear.

What I claim, 1s a 'A scraper pan consisting of side walls and a bottom, a bail pivotally connected tosaid side walls adjacent to the pan bottom,

a frame connected for vertical reciprocatory movement to one of said walls, latches pro vided in spaced relations on said frame, means provided on said bail and-engageable within the space between said latches, and a lever fulcrumed to the pan whereby said frame may be elevated to render said latches inoperable to retain the pan in upright posi;

tion.

Signed at Seattle, Washington, this 10th 23 

